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Have a 50" tv mfg 1993 model # 50UX15K SERIAL #U3J004554 THE PICTURE WONT HOLD IN IT CONSTANTLY JUMPS BUT I DON'T KNOW WHERE THE VERTICAL HOLD IS . PICTURE IS STILL VERY CLEAR.. THANK YOU

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You need to solder the bottom of the vertical output IC, this develops bad connections over the years and can cause your problem. There are other things that can cause it but this would be my best guess. IF you know how to solder and would like to try this yourself you can email me pictures of the boards inside the tv and I will circle the ic i need you to solder and the set should be fixed after that!

Let me know!
Tim Nolan
experttv@comcast.net

Posted on Sep 24, 2008

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